@article{ref1,
title="The impact attenuation performance of materials used under indoor playground equipment at child care centers",
journal="Injury control and safety promotion",
year="2001",
author="Mack, M. and Sacks, J. and Hudson, S. M. and Thompson, D.",
volume="8",
number="1",
pages="45-47",
abstract="Abstract unavailable.<p />",
language="",
issn="1566-0974",
doi="",
url="http://dx.doi.org/"
}